Fracture behaviour of potato samples (cv. Desiree) under uniaxial compression

Canet, Wenceslao; Álvarez, Marı́a Dolores; Gil, M.J.

doi:10.1016/j.jfoodeng.2007.02.054

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…Four replicates were undertaken for each sample during storage. Compressive Young's modulus E, the critical stress r c and the Resistance's modulus were extracted from engineering stress r-strain e curves (Canet, Alvarez, & Gil, 2007). The results are presented as an average for the four slices (sample replicate) of crumb.…”

Section: Measuring Crumb Mechanical Propertiesmentioning

confidence: 99%

Improvement of gluten-free bread properties by the incorporation of bovine plasma proteins and different saccharides into the matrix

2015

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Section: Measuring Crumb Mechanical Propertiesmentioning

confidence: 99%

Improvement of gluten-free bread properties by the incorporation of bovine plasma proteins and different saccharides into the matrix

2015

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“…The Poisson's ratio of nitrile rubber was finally stabilized at 0.43 under a sustained loading of 200 kPa at 25 • C. Due to the lack of creep test bench, this experiment could not be carried out for a long time with constant stress loading, and the Poisson's ratio of nitrile rubber measured in this experiment was 0.41, which was slightly less than 0.43. D. Murali Manohar et al [30] measured the Young's modulus of nitrile rubber with different hardnesses and fitted the following relationship based on experimental data, as in Equation (10). The Young's modulus of nitrile rubber with a hardness value of 65 Shore 'A' is 6.87 MPa, calculated from Equation (10).…”

Section: The Feasibility Verification Of Poisson's Ratio and Young's ...mentioning

confidence: 99%

“…D. Murali Manohar et al [30] measured the Young's modulus of nitrile rubber with different hardnesses and fitted the following relationship based on experimental data, as in Equation (10). The Young's modulus of nitrile rubber with a hardness value of 65 Shore 'A' is 6.87 MPa, calculated from Equation (10). The Young's modulus of 65 Shore 'A' nitrile rubber is calculated to be 6.87 MPa.…”

Section: The Feasibility Verification Of Poisson's Ratio and Young's ...mentioning

confidence: 99%

“…The physical properties and the damage characteristics of potato tubers have been relatively comprehensively researched in the available literature. Canet et al [10] studied the fracture behavior of potato samples under uniaxial compression. Bentini et al [11] researched the changes in the Poisson's ratio and Young's modulus of two varieties of potato tubers during cold storage.…”

Section: Introductionmentioning

confidence: 99%

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An Experimental Study of Axial Poisson’s Ratio and Axial Young’s Modulus Determination of Potato Stems Using Image Processing

Fan

Wang

et al. 2022

Agriculture

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Potato stems removal is an important part of mechanized potato harvesting. However, there is still limited research on the physical properties of potato stems, especially the determination of Poisson’s ratio and Young’s modulus. This study determined the Poisson’s ratio and Young’s modulus of the potato main stems at different heights above the ground. Since the Potato stems are viscoelastic cylinders with non-standard circular cross-sections and complex textures, the existing determination methods are difficult to apply. We propose a new method to determine Poisson’s ratio and Young’s modulus by combining image processing in the mechanical compression process. The feasibility of this method was verified by determining the hardness value of 65 Shore ‘A’ nitrile rubber specimens, and the measured Poisson’s ratio and Young’s modulus were close to the relevant literature. This method can be used for the determination of potato stems. Atlantic potatoes are widely grown for their high solids content, resistance to pests and diseases, and good processing quality. Ten Atlantic potato main stems were randomly selected at harvest time. Specimens with a length of 11 ± 1 mm were taken at 0 cm, 10 cm, 20 cm, and 30 cm above the ground from each stem. The average values of the axial Poisson’s ratio were determined as: 0.21, 0.28, 0.30, 0.32, and the axial Young’s modulus as: 15.90 MPa, 12.38 MPa, 11.68 MPa, 11.28 MPa. This study has provided critical basic data for the discrete element model construction of potato stems and numerical simulation of potato haulm killers and potato harvesters, which is beneficial for improving the harvest quality of potato. It also provides new ideas for Poisson’s ratio and Young’s modulus measurement of non-regular cross-sectional cylindrical viscoelastic materials.

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“…The basis of analytical calculations and design of processes and equipment for the mechanical processing of plant biomaterials, including for potatoes, and animal origin are stress-strain studies [1]. Often used for this purpose the test for the destruction at the conditions of uniaxial compression of carved from their flesh cylindrical samples is informative and universal method [2,3,4]. Such studies establish the nominal compression stresses (hereinafter -stresses), including the ultimate compressive stress σ U (compressive strength), the relative deformation ε (hereinafter -strain) and the general form of the fracture graph in the stress-strain (σ-ε) coordinates [5].…”

Section: Introductionmentioning

confidence: 99%

Deformation Features of Uniaxial Compression of Samples From the Potato Tubers Flesh

Жуков

Лукин

2019

Food systems

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A BST R ACTThe article analyzes the deformation mechanism under uniaxial compression of cylindrical samples cut from the pulp of potato tuber. In its typical S-shaped stress-strain diagram, three characteristic zones of different types of dominant deformation can be distinguished. Clarified the boundary between the second and third zones. The rationale for changing the type of deformations in each zone by adding a new type to the previous one is presented. Grounded elastic deformation in the first zone, which is associated with stretching of the cell membranes. In the second zone, the destruction of individual cells distributed in the sample volume occurs and in the third zone -the predominant gradual unification of these destructions. An explanation is given of the characteristic brittle fracture of the sample with significant residual deformations at the end of the third zone. The erroneous determination of the deformations of the second and third zones as plastic (yield) was noted. In this regard, a new term was introduced -modulus of rigidity Z. The change in the modulus of stiffness Z with increasing irreversible deformations indicates structural changes in the flesh of the sample due to its gradually collapsing cell structure. The reason for straightening diagrams for samples from fresh, hard potato tubers is explained. Taking into account the type of deformations by zones allows us to reasonably proceed to the creation of criteria for quantitative assessments of the degree of flaccidity of potato tubers.

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Fracture behaviour of potato samples (cv. Desiree) under uniaxial compression

Cited by 6 publications

References 18 publications

Improvement of gluten-free bread properties by the incorporation of bovine plasma proteins and different saccharides into the matrix

Improvement of gluten-free bread properties by the incorporation of bovine plasma proteins and different saccharides into the matrix

An Experimental Study of Axial Poisson’s Ratio and Axial Young’s Modulus Determination of Potato Stems Using Image Processing

Deformation Features of Uniaxial Compression of Samples From the Potato Tubers Flesh

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